Home / 12,661.45-18,993.69-4,342.95

Finding the Fourth Proportional to 12,661.45, 18,993.69 and 4,342.95

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Solution

The fourth proportional to 12,661.45, 18,993.69 and 4,342.95 is: 6,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.45 : 18,993.69 = 4,342.95 : x
  2. Step 2: Convert to fraction form
    12,661.45/18,993.69 = 4,342.95/x
  3. Step 3: Cross multiply
    12,661.45x = 18,993.69 × 4,342.95
  4. Step 4: Simplify right side
    12,661.45x = 82,488,645.99
  5. Step 5: Solve for x
    x = 82,488,645.99/12,661.45
  6. Step 6: Final answer
    x = 6,514.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.